Blow-torch or fire-pot.



M. GOLDBERGEB.

BLOW TORCH OB FIRE POT- APPucATlou FILED FEB. 13, |915.

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APPLICATION FlLE) FEB. l3.`|9l5- Patented Oct. 15, 1918.-

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MAURICE GOLDBERG-ER, 0F FORT WAYNE, INDIANA.

BLOW-TORCH OR FIRE-POT.

Application filed February 13, 1915-.

To all whom t may concern.'

Be it known that I, MAURICE GOLDBERGER,

a citizen of the United States, residing at Fort Wayne, in the county ofAllen and State of Indiana, have invented new and useful Improvements inBlow-Torches or Fire-Pots, of which the following is a speciication. fThe invention relates to blow torches or fire pots. In devices of thisclass it is desirable to have as few openings in the shell of the fuelreservoir as possible in order that there shall be a minimum opportunityfor leakage and also that the shell shall be as strong as possible. Itis also desirable that the device shall be capable of producing anintense heat and in which the fuel is practically all used up. It isalso desirable that the device may be used in various positions-011 itsside or tilted at various angles without causing the intake of the fuelfeed pipe to be elevated above the level of the liquid fuel. It is alsodesirable that all valves and ducts may be readily accessible for repairor renewal or for cleaningout.

The object of my invention is to provide a simple and eiiicient devicewhich shall have among others all the advantages and requirements aboveset forth.

In the drawings I illustrate 'how my invention may be carried out inpractice, in which- Figure 1 is a side elevational view of a torchconstructed according to my invention; Fig. 2 a section on line 2-2 ofFig. 1; Fig. 3 an enlarged sectional view of the lower portion of thereservoir, the feed pipes being omitted; Fig. 4 a plan view of thefilling sleeve of the bottom; Fig. 5 a vertical sectional view of thesame; Fig. 6 an eleva-- tional view of the air pump partly in section;Fig. 7 a plan view of the air controlling valve of the pump; Fig. 8 anelevational view of the same; Fig. 9 a vertical sectional view of areservoir illustrating a modified form of pump structure; Fig. 10 avertical sectional view of the pump illustrated in Fig. 9; Fig. 11 aside sectional elevation of a reservoir showing the use of a concave topwith iiller therein and the air pump serving as a handle; Fig. 12 avertical sectional view of the pump and connectionsillustrated in Fig.11; Fig. 13 an elevational view of the air valve and casing in the pumpof Fig. 12; Fig. 14 a horizontal Specification of Letters Patent.

Patented Oct. 15, 1918.

Serial No. 7,940.

sectional view of a double burner and Fig. 15 a View of a modified'formof burner.

Referring to the drawings which illustrate one manner with variousmodifications of carrying' out my invention in practice, 10 indicates areservoir which may be given any desired shape or contour. A suitablehandle 11 is secured to the reservoir by brackets 12. Near thefoot ofthe wall of the reservoir is provided a shoulder 16 which is formed bybending the material inwardly and then upwardly. Upon this shoulder issoldered the upturned edge 15 of bottom 13 (Figs. 3, 9) and of bottom 86(Fig. 11), the intent being that the inner surface of the upturnedportion of the bottom in any case shall merge intoy or be continuouswith the inner surface 17 of the wall of the reservoir immediately aboveit. The bottom is concave in Figs. 1, 3 and 9 and convex in Fig. 11 andin each case a channel 14 (Fig..3) is provided between the curvedportion and the wall of the reservoir 'which is formed by straighteningout the portion of the bottom between the curved portion and thereservoir wall. The fuel is bound to drain into the channel in the con-'cave bottom type and assure its collection by the burner feed tubes andin the convex bottom type the fuel will drain into the channel when thefuel is low and the reservoir is tilted in use.

In the center or other suitable point in bottom 13 is provided anopening into which a sleeve 17 is fixed a flange 16 thereon extendingonto the outer surface of the bottom about the opening. The sleeve isprovided with a number of openings 18 in its wall. Air pump cylinder 19extends through the sleeve, and a spring 20 is coiled about the cylinderthe ends of the spring being secured to blocks 21 which prevent the saidends from catching in openings 18. A threaded collar 22 secured to thecylinder is engaged in threads 27 on sleeve 17, and head 23 which issquared for the engagement of a wrench is without the bottom 13. Cap 24is threaded onto the projecting end of the cylinder and a grip 26 issecured to piston rod 32 which rod is connected to piston 31. A.threaded collar 25 is secured to piston rod 32 or to grip 26 and isadapted to engage threads provided in the interior of cap 24 and servesas a lock for the piston rod in its inner position.

The upper horizontal face of the threaded collar 22 is provided with alead washer 29 which is adapted to engage in a channel 30 and on bead30a provided in sleeve 17. A shoulder 28 is provided at the upper end ofsleeve 17 against which one end of spring 2O abuts the other end of thespringv abutting the threaded collar 22 on cylinder 19. The bottom 33 ofthe cylinder is provided with a lug 35 through both of which is provideda discharge opening 34. A casing 37 is threaded onto the lug and isprovided with discharge openings 41 and 42. Within the casing is a valve36 having a stem 39 and a spring 40 which tends to seat the valve uponthe end of the lug. The valve head 36 is bifurcated and within thebifurcations is a piece of cork or other suitable material.

A cup casting 43 is secured to the inner sideof the top of the reservoirinto which and through an opening in the top extends the lower end offeed pipe or standard 46. A gland or collar 47 is threaded to the pipeand makes tight contact with the top and casting 43 to make the jointfluid tight. Tubes 44 are connected to casting 43 and extend downwardlyso that their lower ends lie in channel 14 with their open ends facingthe wall of the reservoir. Suitable plugs 45 are threaded through thewall of the reservoir into the ends of the tubes and serve not only toclose the ends of the tubes when desired, but by their withdrawal topermit air to escape from the reservoir when fuel has been placed in it.

The burner is connected to the top of pipe 46. It may be any of the wellknown types as illustrated by the trough 48, generating tube 49, shield50, inlet 51, valve casing 52 and needle valve and stem 53, or I maysubstitute the double burner illustrated in Fig. 14 or burnerillustrated in Fig. 15, both of which will be described hereinafter.

To fill the reservoir it is only necessary to invert the device andrelease the pump cylinder from engagement 4with sleeve 17 whereuponspring 2O will force the pump mechanism upwardly vand expose aconsiderable portion of the open end of thesleeve. One or more of plugs45 may be removed from the reservoir to permit the ready displacement ofthe air in the reservoir. Fuel is then poured onto the concaved bottomwhich operates as a funnel and the fuel passes into the reservoir.

Tubes 44 enable the user to operate the device in most any inclinedposition even though there may be but Va small quantity of fuel in thereservoir. The lowest part of channel 14 is bound to have fuel in it andthe tube nearest that low part will draw up the fuel. In case the fuelis so low that any one or more of the lower ends of tubes 44 will beelevated above the level of the fuel when the reservoir is tilted theuser merely of pipe 54 to bottom 13, which end extends into channel 14.The lower end of pipe 54 is open, and tubes 76 are connected to the pipewhich pipes extend down `into the channel at various points, plugs 77being' adapted to close their open ends similarly to plugs 45. 1n thisembodiment of my invention 1 may use the pump structure illustrated inFig. 6 or that in Fig. 10. In Fig. 9 1 secure to bottom 13 about theopening therein an internally threaded collar 56 in place of sleeve 17.The ypump cylinder 57 is provided with a member 58 having cut outportions 6()` with threaded portions 59 between them and with a head 61having finger grips or wings 61a, a lead washer 61b being inserted in achannel provided in the face of the head, which when installed, abutsthe outer surface of collar 56. Grip 621 piston rod 67, piston 63, lock66, cap 68, bottom 69, nipple 70 with the discharge port 70a, the valve71, stem 72, spring 73 and the casing 64 with'its discharge apertures 74and 75 are substantially identical to the corresponding parts in Fig. 6.To fill vthe reservoir the pump structure is unscrewed from itsengagement with collar 56 and plugs 77 are removed and the fuel ispoured into the funnel formed by the concaved bottom 13 from which itpasses through the collar into the reservoir. Any form of burner may beattached to pipe 54. rlhe handle is not shown in Fig. 9, but it will besimilar to handle 11 of Fig. 1. 1f desired pipes 76 may be omitted inthe device of Fig. 9. The bottom of pipe 54 will then be open and fuelwill enter the pipe through the apertured base 55.

1n Fig. 11 1 illustrate the use of a convex bottom for the reservoirwith 'channel 87, and a concave top 82a. Feed pipe 78 is shown asextended through the center of the top, a threaded member 82 beingsecured to the pipe upon which is engaged a nut 79, having grip 80,which is adapted to tightly grip the top of sleeve 83 which is providedwith apertures 84 and is secured to top 82a. YBraces 85 are secured bothto sleeve 83 and to bottom 86. Ducts 112 are suitably connected to pipe78 and lead to suitable points in channelv 87, the Outer ends beingcontrolled by plugs 113 similarly to plugs 45 and 77. A vent controlledby screw plug 114 is provided in or near top 82a by which air ispermitted to escape as the reservoir is filled with fuel. The lowerendLof pipe 78 .is closed and is supported in casting 115 which issecured to bottom`86 and to braces 85. Foot casting 115 is provided witha socket 116 into which pipe 78 is threaded, a channel 117 beingprovided in the bottom of the casting which communicates with anaperture in the bottom of the socket above which aperture is the openend of the pipe 78, and which aperture may be controlled by a screw plug113a similar to plug 113.

The air pump constitutes the handle in this type. rIhe cylinder 88 issupported on the reservoir by bracket 89 and by bracket 97 which isintegral with base 96 of the cylinder. Piston 90 (Fig. 12) is connectedto piston rod 91, grip 92 being connected to rod 91, and threaded member93 on rod 91 being adapted to engage a threaded opening in boss 94 whichboss is integral with cap 95 and which cap is threaded on the upper endof cylinder 88.

Bottom 109, having a nipple 107 with opening 108, is secured within thecylinder above its lower edge and base 96 is in threaded engagement withthe extended wall of the cylinder. Valve casing 100 is threaded into thelower portion of base 96, the base being chambered above the threadedportion to provide a chamber 99 about a portion of the valve casing. Asquared head 101 and lead washer 102 complete the casing. Valve 103having a cork tip 104 and stem 105 is within the casing and is seatedupon nipple 107 by spring 106.

The valve casing 100 is provided with apertures 100a in its verticalwall and with notches 118 in its top edge (Fig. 13) for the discharge ofair, as the pump is operated, into the interior of base 96 and chamber99, from which chamber the air passes through duct 98 into thereservoir. Plug 110 closes an opening 111 provided in the wall of base96 which enables the user after withdrawing the valve 103 and casing 100to insert a wire into duct 98 for cleaning it out.

In all the illustrations it is apparent that by providing the curvedbottom with a channel adjacent the outer wall of the reservoir and byproviding the fuel intake ducts in said channel, substantially all thefuel is used up by the burner and the burner may be used at any anglewhether little or much fuel is in the reservoir.

The combined pump and plug for the fuel filling opening eliminates onelarge opening in the reservoir and the concave top with filler plugarranged about the fuel feed pipe eliminates one large opening andfurnishes a much easier plug to remove to expose the opening than theordinary plug.

In Fig. 14 I illustrate a double burner having a shield 120 with endwall 121 and apertures 122 and a vertical partition 123 which extendsfrom the end wall a portion of the length of the shield. Two aperturedplugs 124 are threaded into wall 121 in opposite directions so thatvapor entering through the plugs will be directed at an angle to thepartition. Needle valves 130 control the discharge of vapor into theplugs 124, the valve casings being connected to tubes 131 which are inturn connected to generating member 132v having a partition 133 so thatboth valves will receive vapor and either one or both may be used. Thejets impingc angularly upon the opposite sides of the partition and areby it deected to the wall of the shield and again deflected by thelatter to unite in the forward part of the shield or combustion chamberwhere the vapor is combusted. In its baliled course through the shieldthe vapor is mixed with a large proportion of air which is drawn throughthe openings 120- a much larger proportion than where the jet travels ina straight path through the shank. The result is that the combustion ofthe mixture is attended with a high heat whichis desirable for manypurposes. When the double type of burner is used it will be preferableto use a feed pipe formed of heat nonconducting material such asasbestos tubing in order that the heat of the combustion shall not beconducted by the feed pipe into the reservoir.

I may also use the burner illustrated in Fig. 15. This burner is verycheaply constructed as it consists of a swivel union 125 having theinternal threads 126 by which the union is connected to the feed pipe.Pipe 127, preferably a copper tube, is connected to the union and isbent into any number of convolutions, the free end being closed by end128 which is provided with a discharge orifice 129. The convolutions ofthe pipe are arranged so that the burning fuel will first dischargeagainst a considerable proportion of the pipe to initially vaporize thefuel and later the burning vapor will discharge against the same tocontinue the vaporization of the fuel. No needle valve is used as it isonly necessary to release the air under pressure in the reservoir tostop the flow of the fuel to the burner.

On shield 50 (Fig. 1) I provide an upwardly projecting bifurcated lug135 which serves as a rest for a soldering iron. Upon stem 53 I providean elastic member 136 such as soft wire or a chain which, when the ironis placed on the lug may be wound over the rear part of the iron andthereby hold it in place at any desired angle with respect to the aXisof the shield.

What I claim is:

1. In combination a reservoir having a curved bottom and having achannel therein adjacent the wall of the reservoir, the reservoir havingan opening therein for admitting fuel, an air pump mechanism removablyclosing the opening, a feed pipe connected to the reservoir and having aplurality of communications with the channel, means to control. thelatter communications and a burner connected to the feed pipe.

2. The combination of a reservoir having a funnel-shaped bottom andhaving an opening in the bottom for the admission of liquid, a pumpmechanism removably secured in said opening, a feed pipe connected tothe reservoir and a burner connected to the feed pipe.

bottom and having an opening in said bottom forv admitting fuel, a pumpmechanism in threaded engagement with said member and adapted, Whenpartly Withdrawn from said engagement, to establish communicationbetween the exterior and interior of the res- 3. In combination areservoir, a curved ervoir, a feed pipe connected to the reservoir Yanda burner connected to the feedpipe.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents.

Washington, D; G.

